Respectfully, as a Pro I disagree with a number of things in this video, most notably that ball position has to change for it to be "correct" (which, along with "proper", can be such dangerous words in golf).

Personally, I play all of my irons, hybrids, and fairway woods﻿ in the same position...and I've met a number of other Pros, teachers, good players, etc who do this successfully as well.

I've generally followed the idea of moving the ball up in my stance by about a ball's width from say a PW to a 7 iron, and another ball width from a 7 iron to a 5 iron. As the club gets longer, you'll be standing further away from it and putting it up in your stance allows you room to get to the ball. Obviously if you need to hit a trap draw or low stinger type of shot, you'll need to adjust accordingly.